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Green Room surfForecast / East / Sri Lanka
12 Day Weather and Surf, issued 10 pm Tuesday 19 Aug 2025 +0530
Best Forecast Surf Conditions for Green Room this week:
The surf forecast for Green Room over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 21) at 5AM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.6m and 9s. Another secondary swell of 0.5m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Green Room in the next 12 days are 1.5m 16s and forecast to arrive on Saturday (Aug 23) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (+0530) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 21st Aug) | 3ft (0.9m) 16s |
| Best Surf | 5AM (Thu 21st Aug) | 3ft (0.9m) 16s |
| Most Powerful | 11AM (Sat 23rd Aug) | 5ft (1.5m) 16s |
Table - best surf conditions forecast for Green Room over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 30°C on Thu morning, min 25°C on Tue night). Winds increasing (light winds from the SW on Wed morning, fresh winds from the SSW by Fri afternoon). | Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Sun night. Warm (max 32°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | |||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 14 | 18 | 18 | 16 | 16 | 15 | 15 | 14 | 14 | 18 | 16 | 16 | 15 | 16 | 14 | 14 | 13 | 13 | 12 | 12 | 6 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 182 | 383 | 561 | 620 | 492 | 507 | 443 | 397 | 530 | 879 | 1309 | 956 | 978 | 860 | 806 | 623 | 484 | 549 | 376 | 376 | 505 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | on | on | cross | on | cross- on | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross- on | cross- off | cross | cross- on | cross | cross | cross- on | cross | |
High Tide / height (m) | 4:11AM 0.21 | 2:34PM 0.15 | 4:22AM 0.22 | 2:51PM 0.15 | 4:35AM 0.22 | 3:06PM 0.15 | 4:46AM 0.22 | 3:22PM 0.15 | 4:56AM 0.22 | 3:39PM 0.15 | 5:02AM 0.21 | 3:57PM 0.15 | 5:05AM 0.20 | 4:15PM 0.15 | ||||||||
Low Tide / height (m) | 8:52PM 0.02 | 10:19AM 0.11 | 9:07PM 0.01 | 10:28AM 0.11 | 9:23PM 0.01 | 10:39AM 0.10 | 9:37PM 0.01 | 10:49AM 0.10 | 9:50PM 0.01 | 10:59AM 0.10 | 10:01PM 0.02 | 11:09AM 0.09 | 10:10PM 0.03 | 11:18AM 0.09 | ||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | ||||||||||||||||
| Sunrise | - | 5:56 | - | - | 5:56 | - | - | 5:56 | - | - | 5:56 | - | - | 5:56 | - | - | 5:56 | - | - | 5:56 | - | |
| Sunset | - | - | 6:15 | - | - | 6:15 | - | - | 6:14 | - | - | 6:14 | - | - | 6:14 | - | - | 6:13 | - | - | 6:13 | |
 |  | | | | |  |  | | |  | | | |  |  | | | | | | ||
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 3 | - | - | - | - | - | |
| Temp. °C | 29 | 29 | 29 | 28 | 30 | 29 | 28 | 30 | 29 | 27 | 31 | 31 | 28 | 32 | 31 | 27 | 32 | 32 | 28 | 32 | 33 | |
| Feels °C (?) | 31 | 30 | 31 | 32 | 31 | 30 | 30 | 30 | 28 | 27 | 31 | 31 | 30 | 32 | 32 | 30 | 31 | 31 | 28 | 32 | 33 | |
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for East
Cross-shore wind at Green Room have swung cross-off (light winds from the W at Mattala Rajapaksa International Airport 79 km from Green Room). 1.3m 6s windswell from the SW with a 0.8m 6s windswell from the SSW and a 0.5m 9s swell from the SE as well as a 0.4m 13s groundswell from the SSW. 4 swells combining to make bigger set waves.- Recent cross-shore wind 89 km from Arugam Bay has fallen light (calm at Badulla). Waves should be turning clean at Arugam Bay. 1.3m 6s windswell from the SW with a 0.8m 7s swell from the S and a 0.6m 7s swell from the SSE as well as a 0.4m 13s groundswell from the SSW. 4 swells combining so expect closeout sets.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Green Room surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Green Room Surf forecast
The above surf forecast table for Green Room provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Green Room can be found by selecting the local surf guide option on the grey menu. Our Green Room surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Green Room) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Green Room may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Green Room is 75 km (47 miles) from Ampara. If you plan a holiday in East Sri Lanka, look for hotels and other accommodation in Ampara. Ampara has rooms for a wide range of budgets as well as car hire and transport links.
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